285557811

素因数分解:

$3^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{71}}^1\times {\mathrm{757}}^1$

素因数の和:872

約数の個数: 64

約数和(自身を含む): 502972416

約数和(自身を除く): 217414605

約数列:

[1, 3, 7, 11, 21, 23, 33, 69, 71, 77, 161, 213, 231, 253, 483, 497, 757, 759, 781, 1491, 1633, 1771, 2271, 2343, 4899, 5299, 5313, 5467, 8327, 11431, 15897, 16401, 17411, 17963, 24981, 34293, 52233, 53747, 53889, 58289, 121877, 125741, 161241, 174867, 191521, 365631, 376229, 377223, 574563, 591217, 1128687, 1236181, 1340647, 1773651, 3708543, 4021941, 4138519, 8653267, 12415557, 13597991, 25959801, 40793973, 95185937, 285557811]

約数ペア:

[(1, 285557811), (3, 95185937), (7, 40793973), (11, 25959801), (21, 13597991), (23, 12415557), (33, 8653267), (69, 4138519), (71, 4021941), (77, 3708543), (161, 1773651), (213, 1340647), (231, 1236181), (253, 1128687), (483, 591217), (497, 574563), (757, 377223), (759, 376229), (781, 365631), (1491, 191521), (1633, 174867), (1771, 161241), (2271, 125741), (2343, 121877), (4899, 58289), (5299, 53889), (5313, 53747), (5467, 52233), (8327, 34293), (11431, 24981), (15897, 17963), (16401, 17411)]